Can you really hack a plane cockpit?

Can a plane's cockpit be hacked? One researcher, who used a smartphone to hack the cockpit of a virtual airplane at a security conference in Amsterdam, says yes. The FAA and several makers of cockpit equipment disagree. They say it would be much harder, if not impossible, in a real aircraft.

Chester Wisniewski of the computer security firm Sophos joins Marketplace Tech host David Brancaccio to explain if the idea has much credence.